From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: Perf regression of netperf compared Xen 4.4 to origin/master Date: Wed, 2 Jul 2014 17:55:05 +0100 Message-ID: <53B43969.1030507@citrix.com> References: <20140702165200.GA3044@laptop.dumpdata.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta4.messagelabs.com ([85.158.143.247]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1X2NoL-0001g7-Sr for xen-devel@lists.xenproject.org; Wed, 02 Jul 2014 16:55:11 +0000 In-Reply-To: <20140702165200.GA3044@laptop.dumpdata.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Konrad Rzeszutek Wilk , xen-devel@lists.xenproject.org List-Id: xen-devel@lists.xenproject.org On 02/07/14 17:52, Konrad Rzeszutek Wilk wrote: > The test is pretty silly. > > I've 14 guests, and I make each guest run netperf against the other. > I start with 1 pair, then 2 pairs, then up to 7. Each guest > is 768 MB, runs in a RAMdisk and just has one vif. The box is > a SuperMicro X8DB8+ with two E5520 and 12GB of RAM. > The netperf runs for a minute. The guests are PVHVM and I am > using qemu-upstream. The guest configs are: > > builder='hvm' > disk = [ 'file:/mnt/lab/bootstrap-x86_64/root_image.iso,hdc:cdrom,r'] > memory=768 > boot='d' > vcpus=1 > serial='file:/var/log/xen/console-g-vm0.log' > vnclisten='0.0.0.0' > name='g-vm0' > on_crash='preserve' > # IP is 192.168.102.90 > vif = [ 'mac=00:0f:4b:01:01:00, bridge=switch' ] > .. and naturally the ip, name and MAC change for each guest. > > The kernel for both the guest and domain 0 is the same - no > configuration change. The Xen is built without debug=y. What do you mean by this? master has debugging enabled by default so unless you build with debug=n, you will have a debug build. ~Andrew